In 2010, the facilities were struck by the Stuxnet computer malware that experts believed damaged centrifuges used to enrich uranium. The New York Times reported that the U.S. and Israel were behind the attack. Israel has warned Iran of a military strike if it does not halt its nuclear program.
While Iran claims its domestic Internet is to protect against cyberattacks, critics within the country claim it's to prevent the use of social media to organize anti-government protests. In 2009, Facebook and YouTube were used to organize demonstrations against the re-election of President Mahmoud Ahamdinejad.
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